stub support for: itemcount, itemlist, itemdetail, itemimage

curl -i -H "Accept: text/plain" -X GET http://192.168.1.69:8080/cody/rest/itemcount
curl -i -H "Accept: text/plain" -X GET http://192.168.1.69:8080/cody/rest/itemlist
curl -i -H "Accept: text/plain" -X GET http://192.168.1.69:8080/cody/rest/itemdetail
curl -i -H "Accept: text/plain" -X GET http://192.168.1.69:8080/cody/rest/itemimage
curl -i -H "Accept: text/plain" -X POST http://192.168.1.69:8080/cody/rest/itemdetail